I wonder if the only potential significant issues could be:- leftover a/c gas somehow being a major problem. I can't see this being a problem as they normally have oil in them to lubricate the compressor.- can it handle the pressure? I reckon the pressure from the trans oil pump is lower than that in the a/c system, but not sure.- does the trans oil pump provide enough pressure to push enough oil against the extra friction of a large cooler? I guess it will be okay, i'm not the first person to fit a large trans oil cooler.

would be groteskly oversized. SHOULD be able to hold the pressure but you wouldnt know. wouldnt be optimised for the job (or large volumes of oil in the cores) there would be stuffing around with the fittings too. and doesnt the tranny flow through the radiator first anyway?

Another thought, what effect might this have on the coldness of my a/c? I figure the more heat you take out of the trans oil and the more air resistance there is the less efficient the a/c will be. But maybe the difference isn't a problem.

Maybe ideally the trans cooler would be after the a/c condensor, and maybe even more ideally after the radiator, seeing as the tranny oil is hotter than the coolant. But there are practical and financial issues with these ideas.

I used a cut down version from a fridge years ago on a 289 powered Escort with C4 auto..Was used nearly every weekend on club events including rallycross..It was mounted under boot with fan blowing down through it..I would say 1/3 would work well.. The whole condenser may restrict alittle ??

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